ACS770XCB datasheet(3/29 Pages) ALLEGRO

3 / 29 page

Thermally Enhanced, Fully Integrated, Hall-Effect-Based

High-Precision Linear Current Sensor IC with 100 µΩ Current Conductor

ACS770xCB

Allegro MicroSystems, LLC

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

ISOLATION CHARACTERISTICS

Characteristic

Symbol

Notes

Rating

Unit

Dielectric Strength Test Voltage [1]

VISO

Agency type-tested for 60 seconds per

UL standard 60950-1, 2nd Edition

4800

VAC

Working Voltage for Basic Isolation

VWFSI

For basic (single) isolation per UL standard 60950-1, 2nd

Edition

990

VDC or Vpk

700

Vrms

Working Voltage for Reinforced Isolation

VWFRI

For reinforced (double) isolation per UL standard 60950-

1, 2nd Edition

636

VDC or Vpk

450

Vrms

60-second testing is only done during the UL certification process. In production, Allegro conducts 1-second isolation testing according to UL 60950-1, 2nd Edition.

ABSOLUTE MAXIMUM RATINGS

Characteristic

Symbol

Notes

Rating

Unit

Forward Supply Voltage

VCC

Reverse Supply Voltage

VRCC

–0.5

Forward Output Voltage

VIOUT

Reverse Output Voltage

VRIOUT

–0.5

Output Source Current

IOUT(Source)

VIOUT to GND

Output Sink Current

IOUT(Sink)

Minimum pull-up resistor of 500 Ω, from VCC to VIOUT

Nominal Operating Ambient Temperature

TOP

Range E

–40 to 85

°C

Range K

–40 to 125

°C

Range L

–40 to 150

°C

Maximum Junction

TJ(max)

165

°C

Storage Temperature

Tstg

–65 to 165

°C

SPECIFICATIONS

THERMAL CHARACTERISTICS: May require derating at maximum conditions

Characteristic

Symbol

Test Conditions [2]

Value

Unit

Package Thermal Resistance

RθJA

Mounted on the Allegro evaluation board with 2800 mm2

(1400 mm2 on component side and 1400 mm2 on

opposite side) of 4 oz. copper connected to the primary

leadframe and with thermal vias connecting the copper

layers. Performance is based on current flowing through

the primary leadframe and includes the power consumed

by the PCB.

°C/W

Additional thermal information available on the Allegro website.

TYPICAL OVERCURRENT CAPABILITIES [3][4]

Characteristic

Symbol

Notes

Rating

Unit

Overcurrent

IPOC

TA = 25°C, 1 second duration, 1% duty cycle

1200

TA = 85°C, 1 second duration, 1% duty cycle

900

TA = 150°C, 1 second duration, 1% duty cycle

600

Test was done with Allegro evaluation board. The maximum allowed current is limited by TJ(max) only.

For more overcurrent profiles, please see FAQ on the Allegro website, www.allegromicro.com.

ACS770XCB Datasheet(PDF) 3 Page - Allegro MicroSystems

ACS770XCB Datasheet(HTML) 3 Page - Allegro MicroSystems

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

Datasheet Download

Link URL